<template>
  <div class="seller" ref="seller">
    <div class="seller-content">
      <div class="overview">
        <h1 class="title">{{seller.name}}</h1>
        <div class="desc border-1px">
          <v-star :size="36" :score="seller.score"></v-star>
          <span class="text">({{seller.ratingCount}})</span>
          <span class="text">月售{{seller.sellCount}}单</span>
        </div>
        <ul class="remark">
          <li class="block">
            <h2 class="title">起送价</h2>
            <div class="content">
              <span class="stress">{{seller.minPrice}}</span>元
            </div>
          </li>
          <li class="block">
            <h2 class="title">商家配送</h2>
            <div class="content">
              <span class="stress">{{seller.minPrice}}</span>元
            </div>
          </li>
          <li class="block">
            <h2 class="title">平均配送时间</h2>
            <div class="content">
              <span class="stress">{{seller.minPrice}}</span>分钟
            </div>
          </li>
        </ul>
        <div class="favorite" @click="toggleFavorite">
          <span class="icon-favorite" :class="{'active':favorite}"></span>
          <span class="text">{{favoriteText}}</span>
        </div>
      </div>
      <v-split></v-split>
      <div class="bulletin">
        <div class="title">公告与活动</div>
        <div class="content-wrapper">
          <p class="content">{{seller.bulletin}}</p>
        </div>
        <ul v-if="seller.supports" class="supports">
          <li class="support-item border-1px" v-for="(item, index) in seller.supports" :key="index">
            <span class="icon" :class="classMap[item.type]"></span>
            <span class="text">{{item.description}}</span>
          </li>
        </ul>
      </div>
      <v-split></v-split>
      <!--商家实景-->
      <div class="pics">
        <h1 class="title">商家实景</h1>
        <div class="picture-wrapper" ref="pictureWrapper">
          <ul class="picture-list" ref="pictureList">
            <li class="picture-item" v-for="(item, index) in seller.pics" :key="index">
              <img width="120" height="90" :src="item">
            </li>
          </ul>
        </div>
      </div>
      <v-split></v-split>
      <!--商家信息-->
      <div class="info">
        <h1 class="title border-1px">商家信息</h1>
        <ul>
          <li class="info-item" v-for="(item, index) in seller.infos" :key="index">{{item}}</li>
        </ul>
      </div>
    </div>
  </div>
</template>

<script>
import BScroll from 'better-scroll'
import Star from '@/components/star/Star'
import Split from '@/components/split/Split'
import { saveToLocal, loadFromLocal } from '@/common/js/utils'
export default {
  props: {
    seller: {
      type: Object
    }
  },
  components: {
    'v-star': Star,
    'v-split': Split
  },
  data () {
    return {
      favorite: (() => {
        return loadFromLocal(this.seller.id, 'favorite', false)
      })()
    }
  },
  computed: {
    favoriteText () {
      return this.favorite ? '已收藏' : '收藏'
    }
  },
  created () {
    this.classMap = ['decrease', 'discount', 'special', 'invoice', 'guarantee']
  },
  mounted () {
    this._initScroll()
    this._initPictureScroll()
  },
  updated () {
    this.scroll.refresh()
  },
  // 必须等到seller数据异步加载完成后，才能执行 _initPicScroll 方法，将其 方法执行 放在 watch 对象中，
  // 当观测到 seller 数据，或者得到之后，执行 _initPicScroll 方法
  watch: {
    // 当观察到 seller 生成时 就可以执行 _initPicScroll 方法
    'seller' () {
      this.$nextTick(() => {
        this._initPictureScroll()
      })
    }
  },
  methods: {
    toggleFavorite (event) {
      if (!event._constructed) {
        return
      }
      this.favorite = !this.favorite
      saveToLocal(this.seller.id, 'favorite', this.favorite)
    },
    _initScroll () {
      this.scroll = new BScroll(this.$refs.seller, {
        click: true
      })
    },
    _initPictureScroll () {
      let pictures = this.seller.pics
      if (pictures) {
        let pictureWidth = 120
        let margin = 6
        let width = pictures.length * (pictureWidth + margin) - margin
        this.$refs.pictureList.style.width = width + 'px'
        this.pictureScroll = new BScroll(this.$refs.pictureWrapper, {
          scrollX: true,
          eventPassthrough: 'vertial'
        })
      }
    }
  }
}
</script>

<style lang="stylus" scoped>
  @import "../../common/stylus/mixin.styl"
  // 首先seller 绝对定位，作为滚动容器
  .seller
    position: absolute
    top: 174px
    bottom: 0
    left: 0
    width: 100%
    overflow: hidden
    .seller-content
      .overview
        padding: 18px
        .title
          margin-bottom: 8px
          line-height: 14px
          color: rgb(7, 17, 27)
          font-size: 14px
          font-weight: 800
        .desc
          padding-bottom: 18px
          border-1px(rgba(7, 17, 27, 0.1))
          font-size: 0
          .star
            display: inline-block
            margin-right: 8px
            vertical-align: top
          .text
            display: inline-block
            margin-right: 12px
            line-height: 18px
            vertical-align: top
            font-size: 10px
            color: rgb(77, 85, 93)
        .remark
          display: flex
          margin-top: 18px
          .block
            flex: 1
            text-align: center
            border-right: 1px solid rgba(7, 17, 27, 0.1)
            &:last-child
              border: none
            .title
              margin-bottom: 4px
              line-height: 10px
              font-size: 10px
              color: rgb(147, 153, 159)
            .content
              font-size: 10px
              .stress
                font-size: 24px
                font-weight: 200
                color: rgb(7, 17, 27)
                line-height: 24px
        .favorite
          position: absolute
          width: 50px
          right: 11px
          top: 18px
          text-align: center
          .icon-favorite
            display: block
            margin-bottom: 4px
            line-height: 24px
            font-size: 24px
            color: #d4d6d9
            &.active
              color: rgb(240, 20, 20)
          .text
            line-height: 10px
            font-size: 10px
            color: rgb(77, 85, 93)
      .bulletin
        padding: 18px 18px 0 18px
        .title
          margin-bottom: 8px
          line-height: 14px
          color: rgb(7, 17, 27)
          font-size: 14px
          font-weight: 800
        .content-wrapper
          padding: 0 12px 16px 12px
          border-1px(rgba(7, 17, 27, 0.1))
          .content
            line-height: 24px
            font-size: 12px
            color: rgb(240, 20, 20)
            font-weight: 400
        .supports
          .support-item
            padding: 16px 12px
            border-1px(rgba(7, 17, 27, 0.1))
            font-size: 0
            &:last-child
              border-none()
            .icon
              display: inline-block
              width: 16px
              height: 16px
              vertical-align: top
              margin-right: 6px
              background-size: 16px 16px
              background-repeat: no-repeat
              &.decrease
                bg-image('decrease_4')
              &.discount
                bg-image('discount_4')
              &.guarantee
                bg-image('guarantee_4')
              &.invoice
                bg-image('invoice_4')
              &.special
                bg-image('special_4')
            .text
              line-height: 16px
              font-size: 12px
              color: rgb(7, 17, 27)
      .pics
        padding: 18px
        .title
          margin-bottom: 12px
          line-height: 14px
          color: rgb(7, 17, 27)
          font-size: 14px
          font-weight: 800
        .picture-wrapper
          width: 100%
          overflow: hidden
          white-space: nowrap
          .picture-list
            font-size: 0
            .picture-item
              display: inline-block
              margin-right: 6px
              width: 120px
              height: 90px
              &:last-child
                margin: 0
      .info
        padding: 18px 18px 0 18px
        color: rgb(7, 17, 27)
        .title
          padding-bottom: 12px
          line-height: 14px
          border-1px(rgba(7, 17, 27, 0.1))
          font-size: 14px
          font-weight: 800
        .info-item
          //列表垂直居中 用 上下 padding 可防止列表中数字过多造成影响
          padding: 16px 12px
          line-height: 16px
          border-1px(rgba(7, 17, 27, 0.1))
          font-size: 12px
          font-weight: 200
          &:last-child
            border-none()
</style>
